12 Princes One Princess

Kim Moon Soo a hard-to-get girl and also a very tough and strong girl, but acts like a total simple girl. She comes from a poor family (financial crisis) so she lives with her uncle. Since he doesn't have a daughter or a son, he treats her like one. Her Uncle later enrolled her into the super duper rich school, The Royals School. There she met friends whom she never thought would become best friends.
But what if those BEST FRIENDS become BOYFRIENDS?
What then?..
Broken family.
Broken friendship.
Broken relationships.
Can she help them mend it all?..